marshall



Nov. 11, 1952 v MARSHALL 2,617,488

MOTOR-DRIVEN SHEEP FOOT TAMPER Filed April 6, 1950 3 Sheets-Sheet l Audi'e R. Marshall I N V EN TOR.

WW 12 M5 7 Nov. 11, 1952 A. R. MARSHALL MOTOR-DRIVEN SHEEP FOOT TAMPER 3Sheets-Sheet 2 Filed April 6, 1950 v Audie R. Marshall INVENTOR.

By @W mw w 9% 1952 A. R. MARSHALL MOTOR-DRtVEN SHEEP FOOT TAMPER 3Sheets-Sheet 3 Filed April 6, 1950 Audie R. Marsha/l uquuu INVENTOR. BYW

Patented Nov. 11, .1952

UNITED STATES ATENT OFFICE Audie R. Marshall, House, N. Mex, assignor offifty per cent (59%) to Thomas R. Marshall,

Abilene, Tex.

Application April 6, 1950, Serial No. 154,314

This invention relates to useful improvements in mechanically operatedvehicles of the type which are especially adapted to perform certainparticular jobs.

An object of this invention is to provide an improved tamper which isincorporated in a vehicle, as the rear part thereof, and acts as thedriving medium for the vehicle.

One of the important features of the present invention is the means ofguiding the roller or tamper rollers in their pivotal movement.

Ancillary objects and features of novelty will become apparent infollowing the description of the illustrated form of the invention.

In the drawings:

Figure 1 is a plan view of the device;

Figure 2 is a side view of the device in Figure 1;

Figure 3 is an elevational view of the rollers and their mountingassembly;

Figure 4 is an enlarged transverse view taken substantially on the line4-4 of Figure 1 and in the direction of the arrows; and

Figure 5 is a sectional view taken substantially on the line 5-5 ofFigure l and in the direction of the arrows, the rollers being indifferent positions to illustrate the action of the means of guiding oneroller in its pivotal travel.

In carrying out the invention, there is provided a vehicle II) with theusual mechanical devices pertinent to such vehicles, including a chassisI2, a transmission I4 and drive shaft I6. The drive shaft is coupledwith a differential IS of conventional description by means of theuniversal joint 20.

A frame consisting of sides 22 and 24 together with tubular ends or endmembers 26 and 28 is provided with a transverse cross member 29 whichdivides the frame into chamber 30 and the chamber 32. Stay rods 34 and36 are secured to the ends of the sides 24 and 22 and turnbuckles 31 and38 are provided in the stay rods in order to provide rigidity in theframe construction.

The side 24 is secured to the rear end of the chassis I2 through themedium of small vertical standards 40 (Figure 2). The frame, in effect,forms a rear continuation of the chassis I2.

The ends or end members 26 and 28 are rotatably disposed at their endsin bearings 4|, 42 and 43, 44. The bearings are secured to the sides 24and 22, thereby mounting the tubular ends 26 and 28 for rotation about ahorizontal axis.

Bearings 46 and 48 depend from the tubular ends 26 and 28 to support thetrunnions 50 and 5 Claims. (Cl. 18020) brake 88 52 which are secured tothe end plates 53 and 54 of the rollers 56 and 58. These rollers areprovided with tamper members [it which in themselves perform their usualfunction. By this construction, the rollers 56 and 58 are mounted forrotation about the trunnions as axes and are also mounted for pivotalmovement about the longitudinal axes of the tubes 26 and 28.

To operate the rollers and 58, a symmetrical construction is provided(see Figure 1). A sprocket B4 is fixed to the trunnion 52 and there is achain 66 entrained therearound. Another sprocket 58 is mounted on thestub shaft I0 which projects from the side of the gear box I2 having thebevel gears M and I5 therein. The gear I5 is secured to the shaft I6which is concentrically mounted in the tube 28 and which terminates inthe gear box 80. The meshed gears BI and 82 in the gear box 85 transmitpower from the shaft 85 which extends from the differential I8. An airor liquid operated brake B8 of conventional description is disposed onthe shaft 8 3 in order to provide braking action therefor. A control boxWith a line 92 leading therefrom is provided on the tractor If! in orderto operate the An identical brake 94 is provided on the shaft 95, saidshaft 95 being similar in structure and function to the shaft 84, theonly difference being that it provides a part of the assembly fordrivingly operating the roller 56 instead of the roller 58.

Accordingly, in operation, the tractor engine causes torque to betransmitted to the shafts 95 and 84, the operative one being controlledby utility of either of the brake 88 or the brake 94. This in turnoperates the pertinent roller.

When, for one reason or another, one of the rollers is to be lifted, asby running over a tree stump or the like, the sub-frame I90 or IE2 isalso lifted. Each sub-frame, for example the sub-frame I52, issubstantially U-shaped including a web I53 having legs HM and I 05extending therefrom. Th ends of the legs are secured to the side 28 sothat they may move therewith as the side rotates about its horizontalaxis. The webs I533 of the sub frames I63 and I02 support bearings 45a.and 48a. that receive trunnions 46b and 48b projecting, outwardly fromthe inner end walls of the rollers 55 and 58 and coaxial with thetrunnions 52 and 52, respectively.

Means for guiding the sub-frame, and hence the roller 58 in its travelis provided. The preferable means consists of an arm I66 having asmoothy curved outer surface which is disposed between a pair of rollersH0 and H2 which are carried by the brackets I I3 and I I4. Said bracketsare secured to the cross member 29 and the brackets and rollers form aguide restricting the pivotal movement of the sub-frame and rollerassembly.

One or more of the illustrated units may be used in series by employmentof the drawbar I26 and the usual coupling pin. The second and allsubsequent units will be operated by remote control from the operatorsposition on the front unit by removing front Wheels from each trailerunit.

Having described the claimed as new is:

1. In a vehicle which includes a chassis, a frame having ends and sides,one of said sides being secured to the chassis, said ends beingrotatively connected to said sides, sub-frames coninvention, what isnected with said ends, rollers located within said sub-frames, meansmounting said rollers on said ends of said frame for rotation, meansforming guideways connected to a part of said frameand guides connectedwith said sub-frames and located in said guideways to .limit th movementof said sub-frames.

2. The combination of claim 1, and said guides comprising arms withlongitudinally curved surfaces and side surfaces, and said guidewaysincluding rollers which contact the sid surfaces of said longitudinallycurved arms.

3. The combination of claim 1, and said guideways having rollers, andsaid guides. including arms against which said rollers contact.

4. In a vehicle which includes a chassis, a rectangular frame havingends and sides, a'cross member extending between said sides and defininga pair of chambers, a tamper roller disposed in each of said chambers,said ends being mounted for rotation in said sides, a bearing secured toeach of said ends, each roller having a trunnion, the trunnion of oneroller being received in the bearing of one of said ends and thetrunnion of the other roller being received in the bearing of the otherof said ends, whereby said rollers are'mounted for pivotal movementabout said ends as axes, means connected with said rollers for actuatingthe rollers, guide members secured to said cross membenand armsassociated with said rollers and disposed in said guide members to guidesaid rollers in their pivotal movement.

5. In a vehicle which includes a chassis, a frame secured to the rearend of said chassis, a roller disposed in said frame, and meansfloatingly securingv said roller to said frame, said means including asub-frame with a part thereof constituting a. rotary shaft carried bysaid frame, a trunnion extending from said roller, a bearing secured tosaid sub-frame shaft and receiving the trunnion, a second trunnionextending from the roller and disposed coaxial with the first namedtrunnion and on the opposite side of the roller from the first namedtrunnion, a second bearing carried by the sub-framereceiving-.the'second trunnion, and a guide operatively connected withsaid sub-frame and a part of said fram to limit the movement of saidsub-frame about the'first named trunnion.

AUDIE R. MARSHALL.

REFERENCES CITED The following references'are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,057,472 Wiley Apr. 1, 19131,196,285 Rasmussen Aug. 29, 1916 2,295,645 Flynn Sept. 15', 19422,510,817 Greiner et al June 6, 1950

